New to the list - 2 questions - Chevy Impala SS Forum
 
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post #1 of 8 (permalink) Old 10-31-2005, 09:55 AM
cason234
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Hi There! New owner here and new to the list. I've wanted a big bad B Body for a long time, and finally found and bought the right one for me. I found a 94 Caprice Classic with the following:
LT1, G80, B4U, 2.93 Gears, JA2 Brakes (Disc/Drum), Mint condition leather interior, factory CD player, etc. The paint is white and in perfect condition. (I'm up here in Northwest Washington, where there is no salt or much snow to deal with. Cars last a long time here) I'm really happy with this car, as it will make the perfect platform form my "four door family hotrod". Here's a few questions for you with more experience than I with these cars:
1) Under the hood, on most B Bodies I've seen, there are two electric fans, and you can see the Optispark "out in the open". On mine, there is a regular fan shroud, with a mechanical fan sitting in front of the engine, blocking off the view of the Optispark. It also has an auxiliary electric fan. Why would my car have this? Is this part of a heavy duty cooling package? Is it more cooling capacity than the typical 2 electric fan setup? I must say I'm not a big fan of how it looks. I like seeing the engine "in the clear", without extra paraphernalia on it.

2) The rear end, while equipped with the G80, does have some mighty long legs, which is great for the highway, but I get a little more thrill out of the quick bursts of acceleration afforded to you by a set of 3.73 gears. I know on other GM rear ends, 3.73 gears can only be swapped if the carrier is for 3.42 gears or lower. What about this one - could I swap the 2.93's for 3.73's and still keep the same housing and carrier? Also, how big of a deal is it to swap disc brakes onto this rear end? Would I be better off just to swap a complete Impala SS Rear end onto it? I'd like to avoid the "skinny" 9C1 rear end, as I think it looks funny, although I guess I could fab up some spacers for the rear wheels, if necessary.

Anyways, any help you can offer will be much appreciated.

Thanks people!

cason234
Lynden, WA
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post #2 of 8 (permalink) Old 10-31-2005, 10:09 AM
mrmarkus
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Welcome!
Hot dayum,you sound a lot like me...I just bought my first B-body 6 weeks ago,it was at the right place,right price and at the right time and I dared not let slip this opportunity to grab it.I too needed a family car but didn't want to give up the sports car (my old daily driver was a '87 Monte Carlo LS and getting the kids in/out from the back seat was a PAIN in the arse). So with my new ride,I get the best of both worlds...and more! I don't know who loves my car more,me or my 4 year old son lol...
post #3 of 8 (permalink) Old 10-31-2005, 02:04 PM
Sshockr
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Sounds alot like my car only different color. Unfortuantly the mechanical fan seems to be on most of the B4U cars. It is however fortunatly possible to swap the mechanical fan for an electric. Search the forum the info for it is here. I haven't done the swap myself yet though. As for the gears, I don't know I got lucky and had a 96 Imp rearend with 3.08's and Disc Brakes to swap into mine.
 
post #4 of 8 (permalink) Old 10-31-2005, 04:19 PM
DBeasst
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Quote:
Originally posted by cason234:

1) Under the hood, on most B Bodies I've seen, there are two electric fans, and you can see the Optispark "out in the open". On mine, there is a regular fan shroud, with a mechanical fan sitting in front of the engine, blocking off the view of the Optispark. It also has an auxiliary electric fan. Why would my car have this? Is this part of a heavy duty cooling package? Is it more cooling capacity than the typical 2 electric fan setup? I must say I'm not a big fan of how it looks. I like seeing the engine "in the clear", without extra paraphernalia on it.
.........
Welcome! Congrats on the car!

Answer to 1.
You probably also have V92 on your SPID. The mechanical fan is part of the heavy duty cooling which usually (but not always) comes as part of the towing package (v92).

Many have converted to the dual electric setup, makes it much easier to do cold air intakes and such. Does clean up the engine compartment quite a bit.
post #5 of 8 (permalink) Old 10-31-2005, 08:55 PM
mek
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Congrats Cason on your 'new' family car...been there done this recently myself. Sure beats anything new.

Mark
post #6 of 8 (permalink) Old 11-01-2005, 04:07 AM
RJI
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Welcome to the forum. I had the same set up as yours. No problem changing from changing from the 2.93 to the 3.73 gears. It's a very good upgrade. The mechanical fan can be swapped out for the dual electric. I did a How To write up in the tech section of the forum. https://www.impalassforum.com/tech/en...lete/index.htm and here http://www.theherd.com/
There are part number errors in the HERD web site so go by the ones in the SS Forum.
post #7 of 8 (permalink) Old 11-02-2005, 04:22 PM
Danny_Boy
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Nice find and great car ! I too had a '94 B4U Caprice with LT1 and such.

As far as the clutch fan goes i just deleted the whole thing,brace,belt,clutch fan.You do have a secondary electric fan so you will not over heat if you remove the mech fan.3 things i did was get 3 right size/shorter bolts for the water pump,slaped in a 160* t-stat,and had my PCM reprogramed to compansate for the changese made.Every thing worked great and did not cost much at all.
post #8 of 8 (permalink) Old 11-03-2005, 03:31 AM
caplt4
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congratulation on the car and welcome to the forum, they are very roommy cars, my kids and wife loves the cars, that's why, we have 3 of them and 1 d body,
well every body has answer you fan question, and for your 2 question yes you can, you can swap a ss rear end, or you can buy the parts used or new, and do the swap from drum to disc, you are going to have to tear the rear end to do the gears so you can do the brakes too, if you decide to stay with the same rear end, if you do will have to do a little modification at the end of the brake lines for disc,
changing the gear from 2.93 to 3.73, you will notice a big difference, and you will have to do some reprograming to the pcm too.
good luck with the mod, you got the bug already and if you have more questions you can always ask them here, the people here are very cool and know a lot about the cars.
later
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